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<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi.<span style='mso-spacerun:yes'> </span>I’m
trying to extract a single channel (red) from an RGB image and save that as an
8-bit scalar image. <span style='mso-spacerun:yes'> </span>I can then
discard the original RGB image.<span style='mso-spacerun:yes'>
</span>Between the archives and the test/example code from <span class=SpellE>itk</span>
2.2, I tried to use the <span class=SpellE>RGBToVectorImageAdaptor</span>, then
the <span class=SpellE>VectorIndexSelectionCastImageFilter</span>.<span
style='mso-spacerun:yes'> </span>I seem to be having trouble compiling
the code to use my adaptor, though.<span style='mso-spacerun:yes'>
</span>I believe I’m just confused regarding the true identity of the <span
class=SpellE>RGBToVectorImageAdaptor’s</span> output type, but I can’t
seem to find any more examples.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Can someone point me in the right direction?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=SpellE><span class=GramE><font size=1 color=blue face="Courier New"><span
style='font-size:8.0pt;font-family:"Courier New";color:blue'>typedef</span></font></span></span><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>
<span class=SpellE>itk::RGBToVectorImageAdaptor</span><RGB8ImageType> <span
class=SpellE>AdaptorType</span>;<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=SpellE><span class=GramE><font size=1 color=blue face="Courier New"><span
style='font-size:8.0pt;font-family:"Courier New";color:blue'>typedef</span></font></span></span><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>
<span class=SpellE>AdaptorType::AccessorType::ExternalType</span><span
style='mso-spacerun:yes'> </span><span class=SpellE>PixelVectorType</span>;<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=SpellE><span class=GramE><font size=1 color=blue face="Courier New"><span
style='font-size:8.0pt;font-family:"Courier New";color:blue'>typedef</span></font></span></span><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>
<span class=SpellE>itk::Image</span><<span class=SpellE>PixelVectorType</span>>
<span class=SpellE>VectorImageType</span>;<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=SpellE><font size=1 face="Courier New"><span style='font-size:8.0pt;
font-family:"Courier New"'>AdaptorType::Pointer</span></font></span><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>
adaptor = <span class=SpellE>AdaptorType::<span class=GramE>New</span></span><span
class=GramE>(</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=GramE><font size=1 face="Courier New"><span style='font-size:8.0pt;
font-family:"Courier New"'>adaptor</span></font></span><font size=1
face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>-><span
class=SpellE>SetImage</span>(<span class=SpellE>rgbimage</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'><span
style='mso-tab-count:2'> </span><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=SpellE><span class=GramE><font size=1 color=blue face="Courier New"><span
style='font-size:8.0pt;font-family:"Courier New";color:blue'>typedef</span></font></span></span><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>
<span class=SpellE>itk::VectorIndexSelectionCastImageFilter</span><<span
class=SpellE>VectorImageType</span>, Grayscale8ImageType> <span
class=SpellE>VectorCastType</span>;<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=SpellE><font size=1 face="Courier New"><span style='font-size:8.0pt;
font-family:"Courier New"'>VectorCastType::Pointer</span></font></span><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>
caster = <span class=SpellE>VectorCastType::<span class=GramE>New</span></span><span
class=GramE>(</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=1 color=green face="Courier New"><span style='font-size:8.0pt;font-family:
"Courier New";color:green'>//caster-><span class=SpellE><span class=GramE>SetInput</span></span><span
class=GramE>(</span>adaptor);<span style='mso-tab-count:1'> </span>//
fails to compile, invalid argument type<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><font
size=1 color=green face="Courier New"><span style='font-size:8.0pt;font-family:
"Courier New";color:green'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='mso-layout-grid-align:none;text-autospace:none'><span
class=SpellE><font size=1 face="Courier New"><span style='font-size:8.0pt;
font-family:"Courier New"'>VectorImageType::Pointer</span></font></span><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>
<span class=SpellE>vimage</span> = <span class=SpellE>VectorImageType::<span
class=GramE>New</span></span><span class=GramE>(</span>);<o:p></o:p></span></font></p>
<p class=MsoNormal><span class=GramE><font size=1 face="Courier New"><span
style='font-size:8.0pt;font-family:"Courier New"'>caster</span></font></span><font
size=1 face="Courier New"><span style='font-size:8.0pt;font-family:"Courier New"'>-><span
class=SpellE>SetInput</span>(<span class=SpellE>vimage</span>);<span
style='mso-tab-count:1'> </span><font color=green><span style='color:
green'>// does compile, but of course does nothing</span></font></span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Chris<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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